I was skeptical of the G&G case initially, but after using it, I've come to respect it. It does the job.
The Jan-Al case is just ridiculous. It's the most heavy duty case I've owned and there is simply no way that a bass inside one of these cases could get damaged. If you want it to be lockable and fly with it, though, make sure you are really clear with them about that. They told me that they were going to include TSA approved locks and that turned out not to be the case. They did happily send me a new latch setup, so I can unrivet the old one and put in the new one, but for the price I paid, I was a little bummed that this had to be an issue. I might also request that it be not quite so deep. The thing is burly! I didn't think I would need the wheels and telescoping handle, but it does come in handy.